Introduction to the Theory of Unusual Superconductivity by B. P. Mineev and K. In. Samokhin is a fascinating and deep dive into the world of physics, which opens the door for the reader to one of the most mysterious and intriguing areas of science. Superconductivity, as a phenomenon, has long attracted the attention of scientists and researchers, and this work offers a fresh look at the theory behind this phenomenon. Superconductivity is a state of matter in which electrical resistance disappears and magnetic fields are repelled. This phenomenon, discovered more than a hundred years ago, continues to be the subject of active research and discussion. In the book, the authors seek not only to explain the basic principles of superconductivity, but also to deepen in particular the unusual types of superconductors that have been discovered in recent decades. These materials, which have unique properties, open new horizons for technologies such as quantum computers and highly efficient magnetic systems. The book will be of interest to both undergraduate and graduate students studying physics and experienced researchers working in the field of materials science and condensed matter physics. If you are passionate about science, love to understand complex concepts and strive to understand how the most modern technologies work, this publication will be a real find for you. It is suitable for those who are just beginning their journey in physics, and for those who already have certain knowledge and want to deepen their knowledge in specific aspects of superconductivity. The themes raised in the book are diverse and multi-faceted. The authors consider both theoretical foundations and practical applications of superconductivity, which makes the material particularly valuable. The reader will be able to learn about the mechanisms underlying unusual superconductivity, such as high-temperature superconductors and their quantum properties. The book also addresses issues relating to the interaction of superconductors with external fields, which is a key aspect for understanding their behavior under different conditions. The style of the authors is clear and accessible, which allows even complex concepts to be explained in simple and understandable language. In. P. Mineev and K. In. Samokhin are experienced scientists who are not only engaged in research in the field of superconductivity, but also actively share their knowledge with readers. Their previous work has also received recognition in the scientific community, and this book will not be an exception. It is the result of many years of research and experiments, which gives it special value. If you are looking for literature on topics related to physics, quantum mechanics or new technologies, “Introduction to the theory of unusual superconductivity” will be an important addition to your library. This book will not only expand your knowledge, but also inspire new ideas and research. Allow yourself to immerse yourself in the world of science and discover the amazing possibilities that superconductivity provides.